Asian Journal of Environment & Ecology http://www.journalajee.com/index.php/AJEE <p style="text-align: justify;"><strong>Asian Journal of Environment &amp; Ecology (ISSN: 2456-690X)</strong> aims to publish high quality papers (<a href="/index.php/AJEE/general-guideline-for-authors">Click here for Types of paper</a>) in all areas of ‘Environment and Ecology’. This journal facilitates the research and aims to publish papers as long as they are technically correct, scientifically motivated. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer reviewed, open access INTERNATIONAL journal.</p> SCIENCEDOMAIN international en-US Asian Journal of Environment & Ecology 2456-690X Floristic Inventory of Invasive Alien Aquatic Plants Found in Some Congolese Rivers, Kinshasa, Democratic Republic of the Congo http://www.journalajee.com/index.php/AJEE/article/view/30142 <p><strong>Aim:</strong> To identify invasive aquatic alien plant species found in the Pool Malebo and some rivers in Kinshasa city, their behavior as well as their socio-economic impacts.</p> <p><strong>Study Design:</strong> The study used a combination of purposive sampling and simple random sampling in order to select different sites where samples were collected.</p> <p><strong>Place and Duration of Study:</strong> This study was carried out in different rivers (Pool Malebo system (Kinkole, Kingabwa), and N'sele, Funa and Lukaya rivers) of Kinshasa city in Democratic Republic of the Congo. The Pool Malebo is located along the Congo River. This was conducted between March and October 2013.</p> <p><strong>Methodology:</strong> The collection was performed after a direct observation. The location of collection depended on sites, at Kingabwa and Kinkole, we collected invasive species in the middle of the Congo river and to achieve that, we used canoe. While at N’sele, Lukaya and Funa rivers, samples were collected at the edges. The collection took place in the morning between 7 and 11 am. Recorded species were classified either alien species or invasive alien species according to the status in the study region. The identification of collected species was carried out according to APG III. Seeing the way these species invade the environment and how they disturb the ecology of rivers, the physico-chemical characteristics of waters were measured between 7:00 and 11:00 am with the appropriate electronic probe for each parameter. For each parameter, the comparison between the sites was carried out using the ANOVA test with XLSTAT 2013 software.</p> <p><strong>Results:</strong> Out of 151 specimens collected, 35 species have been identified of which 19 species as alien were identified and 4 proved to be invasive alien species, namely: <em>Eichhornia crassipes, Echinochloa pyramidalis, Ludwigia peploides</em> and <em>Pistia stratiotes</em>. These invasive species are used by farmers as livestock feed and also as green manure for different agricultural and farming activities, As to the physico-chemical characteristics, no significant differences were observed for the temperature and the turbidity in various sites while the pH and conductivity, there was a highly significant difference between different sites. The hydrology of these rivers is seriously disturbed due to the presence of these invasive alien species. These species constitute a serious threat in the erosion of aquatic biodiversity in the removal of native species in the formation of floating monospecific dense mats as observed.</p> <p><strong>Conclusion:</strong> The invasion of alien species is a consequence of human activities and a concern, which affects all sectors of the society. It constitutes a true challenge for ecologists, economists, social scientists, agricultural engineers, environmentalists and other in order to develop and implement strong risk analysis frameworks and environmental impact assessments.</p> Henri Kunzi Mbale Michael Tshibangu Mukendi Gédéon Ngiala Bongo Anthony Batoba Kikufi Félicien Luyeye Lukoki ##submission.copyrightStatement## 2020-02-14 2020-02-14 1 15 10.9734/ajee/2019/v11i430142 Flood Mapping of Fadama Areas in Ile Ife, Nigeria Using Geospatial Techniques http://www.journalajee.com/index.php/AJEE/article/view/30143 <p>Flooding is a serious, common, and costly hazard that many countries face regularly, therefore a global concern. Vulnerability to flood hazards is likely to increase unless effective flood mitigation and management activities are implemented. Flooding is one of the most common environmental issues in the southern and the eastern part of Nigeria alongside with deforestation and erosion.</p> <p>There is need to have information on flood risk and basis for priority setting on political decision on risk mitigation and management of fadama farmers in the study area and since there is lack of information on these, hence the study.</p> <p>The study mapped out fadama areas in the study area (Ife East and Ife Central), identified areas susceptible to flooding, studied the effect of flooding on fadama production in terms of economic and social implication and examined the mitigating efforts of farmers.</p> <p>Eleven Fadama points were mapped out and almost all are in the low elevation (3.5–7.1% slope) which made them prone to/or at risk of flooding during high peak of rainy season. Majority of the fadama farmers have a means of militating against flood by dredging the water ways but no government intervention has been done to assist them. All Fadama farmers are literate, therefore any assistance by the government would be embraced and not misunderstood.</p> J. E. Adewoyin S. A. Ogunyemi S. A. Samson M. O. Adamu O. Fasote ##submission.copyrightStatement## 2020-02-21 2020-02-21 1 7 10.9734/ajee/2019/v11i430143